Air heater



Ov. 29, m27.

1,650,920 R. B. WILTSIE AIR HEATER Filed Jan. 22, 1925 2 Sheets-Sheet l Y wf @a/5 ML75/5.

1,650,920 R.`B. WILTSIE AIR HEATER Filed Jan. 22, 1925 2 Sheets-Sheet 2 W6. 5 y P76. 6-

. fo/ 5. ML75/E.

Streu/w13 @Panarea Nev. 29, 1927.

rrsnf s1-rares fPATEN y ROY B. 'WILTSIE, OFfSANtDIEGQ CALIFORNIA.

AIR HEATER.

.Application led'anu-ary 22,4925. SerialfNoAS.

Myinvention relates to heaters, iparticularly adapted for heating'air for dwellings and other buildings, and the objects ofiny invention are: tirst, to provide a .heater .sides ot which `air is Yadapted to circulate 'for heatingthe air; third, to provide a heater ot this class having a middle heating core through which hot-gases ot' combustion are adapted to circulate `for heating the walls Vofthe saine, and also havinganinner and outer air *heatingl chamber, the inner chamber being adapted to -heat rair to a relatively high temperature and Ithe'air in the outer chamber being adapted to cool the outer wall of the'innercharnhenthereby slightly heating the air "in the outer chamber, the air in the out-er chamber be-r ing combined in relativelylargefqu'antities with the hot air of the inner chamber; fourth, to provide` av heater ot this class have ing a. cor-e through which` heated gasesot combustion are adapted to circulate, and which is provided with a plunalityofA angu lar staggered baiiles inclined upwardlyto- .provide acore or a' heater of this class having` apair of upwardly zigzag and upwardly and backwardly inclined passages, the passage of the hot gases of combustion through either being separately controlled to provide greater or lessheat at one side ot the heater than at the other; seventh, to provide a core `yt'ora heater of thisclass having a pair loi? wide upwardly zigzagchannels, separated a greater distance from each other `at their upper than "at their lower ends, and also .at theirupwardly 1inclined ends Jthan at their lower ends; eighth, Ato `provide as a whole a lnovelly constructed heateriotlthis class, and ninth, lto provide a hot airsheater which'issiniple and econom- .ical lotconstruction, durablaeticient, easy itocontrol, .and Awhich Vwill not readily dexteriorateor get outof order.

/Vith these-and `other objects -in view, as will appear hereinafter, my invention consists otvoertain novel features ot'construcftion, coin'hinationand arrangement ot parts aand portions, as fwillf loe-hereinafter described in detail and particularly set 4forth in the Vappended claims, referencebeingghadto the accompanying drawings and to the characters ot yreference thereon, which forni "a ipart ott this application, in which:

jiFi-gure l 4is a longitudinal sectional eleva tional view of my heater, talren through *l-l of Fig.y 2, showing l certain ypart-s and iportlons in'el-evation to Jfacilitate the illustration, Eand showing the -1novable lheat dilverting'-nielnher in a certain shifted position by dotted lines 5 F ig. 2r isapa-rtial front elevational and partial sectional View thereof, with the section-taken Vthrough 2-2 or" `Fig.` l; yFig. 3 `is a top `view thereof, with 4portions of the 'walls vof the` outer 'and inner `chambers partially broken away and in 'sec- 'tion'to jfacilitate Ythe illustration; Fig. 4 isl va fragmentary sectional view ot'niy heater,

talten'throughC-e of *Figa 1,'Fi'g. 5 is an Venlarged frontfelevational viewot the core of my heater in a. slightlyiinodiiied `torno of construction, with certain parts and portions thereof broken `away and in section to 'facilitate the illustration, and Fig. 6 isa side elevational view thereof.

Li-ke characters of reference referto `sirnilar partsand,portionsthroughout the several views ofthe drawings.

`The heating Corel, heat diverting "burner 3, inner -casing 4t, outer vcasing ,15,

bracketsf''and 7,legs8, fresh air pipest)y $.13, M and 15, heat deiiector '16,heatfde- HectorY operating; rod 17, and the drainpipe 18, constitute the tions ot' iny heater.

The bottoni portion of the core l is provided with a lirehoX la, atthe one end of "which, preferably the front end, is posiof any Suitable construc.

tioned a burner 'o tion. At the upper portion of thisfiirebox is supported a heat `diverting plate Z'which principal parts and porextends from the one end of the core in which the burner is positioned to the opposite end thereof, its side edges being spaced from the side walls of the core, as shown best in Figs. 2 and et. The side edges of the plate 2 are preferably turned upwardly, so as to facilitate the flow of gases of coinbustion to the compartment atthe upper side of the plate, and also to retain condensed water vapor dripping from the upper portion of the core. Said plate is also provided with a pair of downwardly projecting portions extending longitudinally therewith at its lower side to facilitate the conduction of the heat froin the burner to the opposite end of the core. The grooves 2 at the upper side of the plate, forming the projections on the lower side thereof, provide channels for the conduction of condensed water vapor to the lower front end of the plate from which the saine is conducted by ineans of a drainpipe 18.

The upper portion of the core is divided into two separate sections A and B, each of which consists of an angular zigzag channel extending upwardly substantially from the plate 2 and discharging into enlarged charnbers 1l at the upper ends of the sections A and B of the core l. These channels le, which zigzag upwardly, are also inclined upwardly from the end of the core in which the burner is positioned, or as specifically illustrated in the drawings, inclined upwardly toward the rear end of the core. To the front ends of the enlarged chambers ll at the upper ends of the separate sections and B of the core l are respectively connected lines ll, which are provided with dainpers l2, said dainpers being adapted to regulate the heat in each section of the core. The flues ll are connected to the core, as stated, so that all remote portions of the core may be heated as elliciently as possible.

1t will be seen from the above that the hot gases of combustion from the burner 3 will pass around the side edges of the plate 2 and also along the longitudinal channel at the under side thereof toward the opposite end of the core, then pass into the upwardly and angularly zigzag passages lC into the chambers lb and out of the tlues ll. The hot gases of combustion, passing into the front end of the core and inipinging` against the angular baille walls forming the channel, heat the saine and tend, by reason of the upward inclination of these zigzag channels or baffle walls toward the rear end of the core, to deflect said gases toward the rear end of the saine, thus substantially heating all walls of the core.

The front end ot the core l is preferably raised kabove the floor level to perinit aniple supply of air to supportl combustion of the burner.

Around the core l is positioned an inner shell or easing 4, which is preferably spaced from the floor level and supported relatively to the core l by means of brackets (5, as shown best in Figs. l and 3. The front wall of the inner 'shell or casing et is partially removed, as shown best in Figs. 2 and t3, providing an opening for the conduction ot air thereto froni the fresh air pipe 9 secured to the front end and lower portion of the outer shell or casing 5 positioned around the inner easing et; The rear wall of the inner shell or casing 4 is inclined upwardly and backwardly so that the space at the upper portion of the rear end of the inner shell or casing 4 from the wall of the outer shell or casing 5 is considerably less than at their lower ends, so that air adniitted, by means of the air pipe 10 at the lower portion of the rear end of the outer casing 5, is forced, by the nature of the construction, in the spaces between the side walls of the inner and outer shells or cas ings. Said inner and outer shells or casings are supported relatively to each other by means ot' brackets T, as shown in Figs. l and 3. The outer shell or casing 5 is also preferably spaced from the floor level and supported on the legs 8. In the upper wall of the inner easing Il is provided a plurality of outlets l, el" and 1l for permitting the discharge of the heated air within the casing l into the uper portion of the outer casing 5. it the upper end of the outer casing z are also provided outlet openings which coininunicate with hot air conductors 13, 14 and l5 which are preferably so positioned as to register substantially with the openings l, lb and Llc of the inner casing 1.

The core l is so constructed that the space between the sections A and B thereof increases upwardly and backwardly so as to provide for the expansion of the heated gases, the taking in of more air and the deflection of the heated air over the whole of the heated walls of the core l.

rllhe inner shell or casing 4 is )rovided at the lower portions of its side walls with outwardly bent deiieeting portions 4d to facilitate the discharge of more air into the interior of the inner easing from the lower end of the outer casing.

It will be readily seen that, by reason of this construction, as stated, most of the heated air is directed toward the rear end of the inner casing 4. To obviate the discharge of lnost of the hot air through the opening Ll? and into the hot air pipe 15, I have provided an air dellector 1G at the upper rear portion of the inner casing Al, which defiector is pivotally mounted on said inner easing and is adapted, when in a lower position, as shown by solid lines in Fig. l of the drawings, to prevent discharge of hot air through the opening 4", and when in a slightly raised position, to divert the hot air Lili v said ports. 'each section A and B of the corea-re prefer- "toward the other hotair pipes .513 and 14.

larged portions of the zigzag channels ofthe core are ports ld which serve to conduct air frein the outer sides of the core to the space between the separate sections thereof, and also to heat said air-in thepassage through The two setsof the ports lin ably staggered relativelyito each other, as shown best in Fig. 6. The space between the separate sections A and B of the core in the modified forni `of construction is also preferably `considerably larger than in the preferred construction to take care of the additional air discharged into said space tirough thepo-rts 1d.

it obvious from thisconstruction, as illustratedin the-drawings and disclosed in the foregoing specification, that I have provided a heater particularly adapted for heating large volumes of airto amoderate teniperature, as aimed at and set lforth in the objects of the invention, and"though I have shown and described aparticular construction, combination-land arrangement of parts and portions and a certaininodiiication thereof, I donot wish to beliinited to this particular construction, combination and arrangement nor to the modification, but desireto include in the scope of my inif'ention the'construction, combination and arrangement substantially as set forth vin the appended claims.

-l'laving thus described -iny invention, what l claim as new and desireto secure by Let ters Patent is:

l. in a heater of the character described, a heating core adapted to permit the flow and connue the passage 'ofgases of coinbustion within `the corefand from the lower to the upper end thereof, a burner positioned at the lower portion vof said core,1`an inner casing positioned'faround and `spaced from said core, and an outer casing positioned around and spaced from said inner casing adapted to permit the passage of air around all sides of said inner casing for coolingl the latter and for heating the air in "the space between said casin'gs.

2. In a heater ofthe character described, a heating core adapted toperrnit the passage of gases of coinbustionlfrom the `lower to the upper end thereof, Va burner positioned at the lower portion of said core, an inner using positioned yaround and lspaced from said core, airouter casing-positioned around asomo and spaced from said inner casing :adapted Ito l pern'iit ithel Apasln'ge of` air around: alli sides offsaid innercasing for cooling' the latterfand for heating tlreV air in lthespa'ce between said casings, lair `inlet conductors communicating with lthe lower portions of the front and ieaifendsof saidvouter .ca-sing, Aand lhot air discharge Ipipesfconununicating with i the `upper end of vsaid outer casino:

3. In a heater-of 'the character described,

ah'eating core adapted toperniit the passage of gases of combustion vfrom theV lower to the upper end thereof, lnirner .positioned yatlth'e lower 'portionof `said core, an inner `casing lpositioned around and spaced fi-omi` said core, an outer casingpositioned around andspaced yfrom said inner casing adapted to permit the passage of airaround all sides of said inner casing `for cooling the latter and `for heating the air in the space between said casings, an' inlet conductors coininuiii- Ieating with the low-er portionsof'the front and rear ends of said outer casing, and hot air discharge pipes communicating with the upper end ofsaid outer casing, said Vinner casing being provided at its upperend with openings adapted to discharge air heated ithe'rein by'said core into l'the upper portion of said outer casing.

4. In a heater offthe character described,

a. heating coreprovidedl 'atits lower portion with a firebox and rat its upperiportion with a=doublewall`ed air heating 'element having an angular zigzag passageextending from the lower to thecupper end thereof and secured to and: communicating at its lower end with `said iireboX, theportions vof said heat- `ing `element foriningsaid zigzag chan-nel being inclined upwardly from the one end *thereof to the other, and a burneriposition-ed ofsaid core forming saidzigzag channel bei ing inclined upwardly from the 'one end thereof to the other, a burner positioned in said iirebox at the one end thereof Vat which the Ilower portions of the inclined portions forming the zigzag channel terminate with the one end wall of the core, and a heat 'diverting plate ypositioned `between said `burner and fthe zigzag channel portion of fsaid core for diverting the heated gasesfroin said-burner to the sides of the core 'and to the opposite end thereof froin said burner.

6. In a heater of the character-described, a heating core provided at its lower portion with a Firebox and iat' its upper? portion with spaced apart vangular zigzag; passages Vwith individual iiues, said passages extending from the lower to the upper end thereof, the portions of said core forming said zigzag passages being inclined upwardly from the one end thereof to the other, and a casing positioned around and spaced trom said core on all sides thereof and provided at its upper end with openings adapted to discharge heated air therefrom and also open at its one end.

7. In a heater ot' the character described, a heating core provided at its lower portion with a iirebox and at its upper portion with angular zigzag passages extending from the lower to the upper end thereof, the portions o' said core forming said zigzag 'channel being inclined upwardly from the one end thereof to the other, an inner casing positioned around and spaced from said core on all sides thereof and provided at its upper end with openings adapted to discharge heated air therefrom and also open at its one end, and an outer casino positioned around and spaced at its sides and upper end from said inner casing and provided at its upper end with hot air discharge pipes and at the ends ot its lower portion with air inlet pipes adapted to discharge fresh air into the space between said inner and outer casings and to said core.

8. In a heater of the character described, a heating core provided at its lower portion with a iirebox and at its upper portion with angular zigzag passages extending irom the lower to the upper end thereoi, the portions of said core forming said zigzag channel being inclined upwardly from the one end thereo'i to the other, an inner casing positioned around and spaced from said core on all sides thereof and provided at its upper end with openings adapted to discharge heated air therefrom and also open at its one end, an outer casing positioned around and spaced at its sides and upper end trom said inner casing and provided at its upper end with hot air discharge pipes and at the ends ot' its lower portion with air inlet pipes adapted to discharge tresh air into the space between said inner and outer casings and to saidv core, and a heat deilecting membei shiftably mounted at the upper end of said inner casing and adapted to divert the air heated therein and discharged trom one, ot the openings at the upper end thereoii.

9. In a heater ot the character described, a core provided at its lower end with a lirebox merging into a, pair ot separate spaced apart upright air heating sections provided with angular zigzag passages forming angular baille means for` the passage ot the heated gases irom said iirebox to the upper ends oi said zigzag channel sections. said baille means being inclined upwardly from the iront to the rear end thereof.

l0. In a heater ot' the character described, a core provided at its lower end with a lirebox merging into a pair of separate spaced apart upright air heating sections provided with angular zigzag passages forming angular baille means 'for the passage oi the heated gases from said iirebox to the upper ends of said zigzag channel sections, said baille means being inclined upwardly from the iront to the rear end thereof, the space between said upright zigzag channel sections increasing trom the lower to the upper end, and also from the :front to the rear end thereof.

1l. In a heater ot' the character described, a core provided at its lower end with a iirebox merging into a pair oi separate spaced apart upright air heating sections provided with angular zigzag passages Yforming angular baille means ior the passage ot the heated gases from said iirebox to the upper ends ot said zigzag channel sections, said baille means being inclined upwardly from the front to the rear end thercoirthe space between said upright zigzag channel sections increasing iirom the lower to the upp lr end, and also from the iront to the rear end thereof, said channel sections being provided at their upper ends with enlarged chambers, and discharge conductors coinmunicating with the normally lower inclined ends of said chambers.

vl2. In a heater oi the character described, a core provided at its lower end with a lirebox nwrging into a pair of separate spaced apart upright air heating sections provided with angular zigzag passages forming angular baille means for the passage oi the heated gases i'rom said lirebox to the upper ends ot said zigzag channel sections, said baille means being inclined upwardly from the iront to the rear end thereof, the space between said upright zigzag channel sections increasing from the lower to the upper end, and also irom the :front to the rear end thereol', said channel sections` being provided at their upper ends with enlarged chambers, discharge conductors communicating with the normally lower inclined ends oi" said chambers, and a heat diverting plate positioned in said iirebox and spaced i'rom the side edges thereof adapted to divert the heat to the sides oi the core and i'rom one end thereoi' to the other.

13. In a heater ot the character described, a core provided at its lower end with a iirebox merging into a pair olf spaced apart upright air heating sections provided with angular zigzag channels forming angular baille means lor the passage ol the heated g: l'rom said iirebox to the upper ends oi said zigzag channel sections, said baille means being inclined upwardly irom the iront to the rear end thereol, the space between said upright zigzag channel sections increasing 'trom the lower to the upper cud, and also i'roin the l'ront to the rear end thereof, said ltd) llU

lll

channel sections being provided at their upper ends with enlarged chambers, discharge conductors communicating with the normally lower inclined ends of said chambers, a heat diverting plate positioned in said firebox and spaced from the side edg-es thereof adapted to divert the heat to the sides of the core and from one end thereof to the other, an inner casing surrounding said core and spaced at its sides and upper end therefrom and provided at its upper end with discharge openings, and an outer casing positioned around and spaced from said inner casing and provided at its upper end with discharge openings and at its lower end with air inlet openings.

14. In a heater of the character described, a heating core comprising a firebox, and a double-walled air heating element secured to and communicating therewith at its one end, heat diverting means separating said heating element and iirebox, said heating element having a zigzag passage therethrough formed of angularly positioned and staggered channel portions therein.

l5. In a heater of the character described, a heating core comprising a iireboX, and a double-walled air heating element communieating therewith at its one end, heat diverting means separating said heating element and Firebox, said heating element having a zigzag passage therethrough formed of angularly positioned and staggered channel portions therein, the Whole exterior angular surfaces of said heating element being adapted to be subjected to circulating air.

16. In an air heater, a heating core comprising a relatively large combustion chamber, and a relatively thin, double-walled air heating element connected to and communieating therewith at its one end and formed of angularly positioned and staggered channel portions forming with one another an extended zizgag passage therethrough.

17. In an air heater, a heating core comprising a relatively large combustion chamber, and a relatively thin, double-walled air heating element communicating therewith at its one end and formed of angularly positioned and staggered channel portions forming with one anothergan extended zigzag passage therethrough, the whole eXterior angular surfaces of the angularly and staggered channel portions of said heating element being adapted to be subjected to air for heating the latter.

In testimony whereof, I have hereunto set my hand at San Diego, California, this 16th day of January, 1925.

ROY B. WILTSIE. 

